Di Liu of San Jose told Apple he was resigning his position as a design engineer to spend more time with his family and look after his health, but he had secretly taken a job with a rival, and before leaving the iPhone giant, he stole a “massive volume” of its trade secrets, Apple alleges in a lawsuit against Liu. Over his seven years at Cupertino-headquartered Apple, Liu rose to become a senior product-design engineer, and worked on the research and development of the company’s “Vision Pro” aug...